1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b463acfee083a650b32dc6ab21be442eee8dc3ae02e9e6bee29deee48778c6. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4befb8db-649e-4ea1-a9d9-cadbe1390a6c.json and https://artists.proofprofile.net/proofs/artist/4befb8db-649e-4ea1-a9d9-cadbe1390a6c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Intercontinental! Quem Diria! Era Só o Que Faltava!
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c53445374dd2dc3d525c39827d6d927bab24779360b4143ad9a4a7f30bdfce. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRWMB9803581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031351cf39cf33b0f0d17e5d6737903b279a18db75f971363983f97400238ce6. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRWMB9803582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1abf944539fa6483cbf1f6c9eb609ad502974078e446611dd668861d74c75ae. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRWMB9803583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d39f781937ad41a249ffb7040c83faaf14715a6dfeff69c5d9fffffe6a03f7d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRWMB9803584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366001b0ce464f78c45aac874b6e5d09e774e077bb392aced77116b6815155c2. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRWMB9803585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7c8bad5b4a93219e8223caf0c2f0c7a963c134cef4e1f6a74f8803e85d38ff. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRWMB9803586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2a8cbd8df3df6720c9ce8ec7837f6bfcff73dc9a4c941b55f6a0bb40f86044. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRWMB9803587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ea38ef87e206b0bd4c32da22108362cdbedb1719f42375aec2bdba0a97f713. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRWMB9803588.
Não Há Saídas / São-São-Paulo (Música Incidental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805758b6e865788b56c6f3fa280782b3a87e5a61b5ed3e5349321f058e1b1791. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRWMB9803589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c254bbd4d56762244490f91e6c3421b5cf8a4c4a3beba58b3ece684d223b4e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRWMB9803590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420f44f24ba46d79392c8b77eba64b8cc4c16a6f19b5fa568008bd28621b2e3f. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRWMB9803591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5a21d5905fc5f45bb76a68817f7647dfd646f83559b2f651e1efeff76e307b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRWMB9803592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ef5019ad68a80e709abfc51d6d3a45a6d6cd03074f8e7c4f581c9eb5ca9799. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRWMB9803593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043ddef67a8deb0836adc9590e108a67dc3bd09b6d9aba74a303235525bfe9d6. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRWMB9803594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecb019781acb98ec88d542fdde831265e4aa5a0704ec5bbbffe99f148ecd8d8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRWMB9803595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6535dd511fa7fd776a93b62c72f57c2a02a55a7f51c0d4830d0333cd7c79c7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRWMB9803596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b5f7af9328a582266c0b04871960808d1ba977581db1b2649ef35d70511aa7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRWMB9803597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19ca0d0b5d4be9e1b13316e6e04408e1149df72c99f901ad8f886c40914bea5. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRWMB0001319.